Fl. China 11: 79–80. 2008.

14. Blume, Bijdr. 137. 1825, nom. cons. 小芸木属 xiao yun mu shu Zhang Dianxiang (张奠湘); Thomas G. Hartley or , unarmed. Leaves alternate, odd-pinnate [or rarely digitately 3-foliolate and/or 1-foliolate]. terminal or terminal and axillary, paniculate. Flowers bisexual, ellipsoid or broadly ellipsoid to obovoid to oblong in bud. Calyx cup- shaped, shallowly 5-lobed or -toothed. Petals 5, valvate in bud. 10, distinct, alternately unequal in length; filaments sublinear, ± straight. Disk annular or columnar. 3–5-loculed, syncarpous; radial walls of locules becoming curved after anthesis; ovules 2 per locule; style to 1.5 × as long as , deciduous in fruit. Fruit a with neither pulp nor pulp vesicles; endocarp membranous. Seeds ellipsoid; seed coat membranous; endosperm lacking; embryo straight; cotyledons broadly elliptic, thin, convolute and/or folded; hypocotyl superior. About ten species: S and SE Asia, Australia, SW Pacific islands; two species in China. 1a. Flower buds ellipsoid or broadly ellipsoid; petals 3–4 mm, outside glabrous or pubescent; margin of leaflet blades serrate or repand ...... 1. M. falcatum 1b. Flower buds oblong; petals 5–10 mm, outside densely pubescent; margin of leaflet blades crenate, repand, or entire ...... 2. M. integerrimum 1. Micromelum falcatum (Loureiro) Tanaka, Bull. Mus. Natl. longest leaflet blades to 20 cm ...... 2a. var. integerrimum Hist. Nat., sér. 2, 2: 257. 1930. 1b. Young parts rust-colored hispid; longest leaflet blades to 24 cm ...... 2b. var. mollissimum 大管 da guan Aulacia falcata Loureiro, Fl. Cochinch. 1: 273. 1790. 2a. Micromelum integerrimum var. integerrimum Trees 1–3 m tall. Branchlets, petioles, and 小芸木(原变种) xiao yun mu (yuan bian zhong) rachises hirsute. Leaves 5–11-foliolate; Bergera integerrima Buchanan-Hamilton ex Candolle, petiolules 3–7 mm; leaflet blades alternate, ovate to lanceolate, Prodr. 1: 537. 1824. inequilateral, 4–9 × 1.2–3.5(–4.5) cm, margin serrate or repand, apex acuminate to caudate. Inflorescences terminal. Flowers Trees to 8 m tall. Young parts rust-colored pubescent. ellipsoid or broadly so in bud. Calyx lobes broadly triangular, Leaves 7–15-foliolate; leaflet blades basally on rachis ca. 4 cm less than 1 mm. Petals white, oblong, 3–4 mm, outside glabrous and apically to 20 × 8 cm. Fruit 1–1.5 × 0.7–1.2 cm. or pubescent. Longer stamens subequal to petal length, Moist montane forests, maritime thickets in sandy soil; near sea shorter ones subequal to gynoecium length. Style cylindric, level to 2000 m. SW Guangdong, Guangxi, S and SW Guizhou, longer than ovary; stigma capitate. Fruit ellipsoid to obovoid, Hainan, SE Xizang, S Yunnan [Bhutan, Cambodia, India, Laos, 8–10 × 7–9 mm, 1- or 2-seeded. Fl. Jan–Apr, fr. Jun–Aug. Myanmar, Nepal, Thailand, Vietnam]. Mountains; below 1200 m. SW Guangdong, Guangxi, Hainan, S 2b. Micromelum integerrimum var. mollissimum Tanaka, Yunnan [Cambodia, Laos, Myanmar, Thailand, Vietnam]. Bull. Mus. Natl. Hist. Nat., sér. 2, 2: 157. 1930. 2. Micromelum integerrimum (Buchanan-Hamilton ex Can- dolle) Wight & Arnott ex M. Roemer, Fam. Nat. Syn. Monogr. 1: 47. 1846. 小芸木 xiao yun mu Trees 6–8 m tall. Bark gray, smooth. Leaves 7–15- foliolate or 5–11-foliolate; petiolules 2–5 mm; leaflet blades alternate to subopposite, elliptic, lanceolate, or ovate, inequilateral, both surfaces dark green, margin entire, apex acuminate. Flower buds pale green, oblong. Calyx lobes ca. 1 mm. Petals pale yellow, 5–10 mm, outside densely pubescent. Disk columnar. Stigma capitate. Fruit ellipsoid to obovoid, 1– 1.5 × 0.6–1.2 cm, 1- or 2-seeded. Seed coat membranous. Fl. Feb–Apr, fr. Jul–Sep. 2n = 18.

Moist montane forests, valley forests, maritime thickets in sandy soil; near sea level to 2000 m. SW Guangdong, Guangxi, S and SW Guizhou, Hainan, SE Xizang, S Yunnan [Bhutan, Cambodia, India, Laos, Myanmar, Nepal, Philippines, Thailand, Vietnam]. 1a. Young parts rust-colored pubescent; Fl. China 11: 79–80. 2008.

毛叶小芸木 mao ye xiao yun mu Trees 6–8 m tall. Young parts rust-colored hispid. Leaves 5–11-foliolate; leaflet blades 10–24 × 4–8 cm. Young fruit ellipsoid, ca. 1 × 0.6–0.7 cm, pubescent, glabrescent when ripe, vermilion. Fl. Feb–Apr, fr. Jul–Sep.

Valley forests; 100–600 m. SE Guangxi, S Yunnan [Cambodia, Laos, Philippines, Vietnam]. Fl. China 11: 79–80. 2008.